# Metadata Source URL:: https://ai.stackexchange.com/questions/7640/what-does-stationary-mean-in-the-context-of-reinforcement-learning Topics:: #ai --- # What does "stationary" mean in the context of reinforcement learning? I think I've seen the expressions "stationary data", "stationary dynamics" and "stationary policy", among others, in the context of reinforcement learning. What does it mean? I think stationary pol... ## Highlights > [!quote]+ Updated on 160922_090704 > > A stationary policy is a policy that does not change. Although strictly that is a time-dependent issue, that is not what the distinction refers to in reinforcement learning. It generally means that the policy is not being updated by a learning algorithm